Kilograms (kg) to Pounds (lb) Conversion
Kilograms
The kilogram is the SI base unit of mass. From 1889 to 2019, it was defined by the International Prototype of the Kilogram — a physical cylinder of platinum-iridium alloy stored near Paris. In 2019, the kilogram was redefined in terms of Planck's constant (h = 6.62607015 × 10⁻³⁴ J·s), making it the first base unit defined entirely by a fundamental constant of nature. This eliminated the risk of the kilogram gradually changing mass due to contamination of the physical prototype.
Pounds
The pound (avoirdupois) is a unit of mass equal to exactly 0.45359237 kilograms, standardised in 1959. It is the primary unit of mass in the US customary and British imperial systems, used for body weight, food packaging, and commercial transactions. The pound is subdivided into 16 ounces. In US engineering, the distinction between pound-mass (lbm) and pound-force (lbf) is a frequent source of calculation errors.
| Kilograms (kg) | Pounds (lb) |
|---|---|
| 0.1 kg | 0.22046226218488 lb |
| 1 kg | 2.2046226218488 lb |
| 2 kg | 4.4092452436976 lb |
| 3 kg | 6.6138678655463 lb |
| 5 kg | 11.023113109244 lb |
| 10 kg | 22.046226218488 lb |
| 20 kg | 44.092452436976 lb |
| 30 kg | 66.138678655463 lb |
| 50 kg | 110.23113109244 lb |
| 100 kg | 220.46226218488 lb |
| 1000 kg | 2204.6226218488 lb |